fix use of unitialized array in lru_maintainer
fix use of unitialized array in lru_maintainer

use slightly more modern syntax :P

Wasn't really a bug since it'd just sleep too much for a bit or cap it back
to the MAX. This will give more consistent behavior though.

Thanks to shqking on github for the report

memcached/memcached,gencer/memcached,memcached/memcached,dormando/memcached,dormando/memcached,dormando/memcached,guikcd/memcached,gencer/memcached,guikcd/memcached,gencer/memcached,gencer/memcached,gencer/memcached,guikcd/memcached,memcached/memcached,memcached/memcached,memcached/memcached,guikcd/memcached,guikcd/memcached,dormando/memcached,dormando/memcached